| Mr Physics 2007-05-29, 3:33 pm |
| sarah bennett wrote:
> On Tue, 29 May 2007 09:31:25 -0400, Mr Physics wrote:
>
>
> Hi there Mr. Physics,
>
> I use my Blackberry mini-USB AC adapter to charge my kid's Motorola RAZR
> all the time! And vice versa. No damage yet. Nothing gets overly hot
> either.
>
> The only difference I've seen in the miriad of mini-USB adapters I have is
> the maximum current (generally 400ma for earbuds, 500 ma for phones, and
> 750 ma for higher-powered devices).
>
> For example, the maximum current on the Motorola RAZR mini-USB AC power
> supply is 500 ma while the Blackberry AC adapter safely puts out 750 ma if
> called upon. So, of course, it's safer to go with the Blackberry AC + DC
> power supplies and adapters ... but both work just fine and both charge the
> Motorola earbud also.
>
> sarah
Weird!
Heaven knows I've tried. Maybe a more systematic approach would be
better. I can't get anything to charge the Razr except a purpose-built
charger and the USB cable to the pc. And the cable to the PC only seems
to work if the driver for the phone is loaded. I wonder if a newer phone
firmware would help. This is a very early model GSM Motorola.
In the past we've deliberately bought the same models of phone and
laptop to try to minimize logistical issues at work, at home and when we
travel.
On a grand scale this stuff ranks as annoyance but it is definitely
frustrating to deal with and can become an obsession for people like me.
Greg
|